I think the best thing about NOS is that when you put it on your bike you know it's not knackered!
The problem is a lot of sellers still think its NOS when it's taken off the bike again.
That's something I've never really 'got' about this Forum; the number of people who spend a small fortune on a build, only to split it shortly after to fund something else...
The bikes of mine that I've spent far more on than is really wise I shall never get rid of; I wouldn't have bothered in the first place otherwise.
Sure I have quite a bit of 'stock' common sense demands I move on, but I shall be making a massive loss on some of it...
...I bought a NOS Attac stem, still in the box, from the States and it makes my eyes water when I think how much I paid for it, only to change my mind on how I wanted the build to progress once I'd fitted it and ridden about 10 miles on it!
Ditto a couple of CK headsets, and another 1 1/4" Manitou stem